Some works of art are like symphonies: methodically orchestrated and years in the making, with the potential to be labelled a masterpiece. The artist and d.j. Christian Marclay is best known for his instant classic “The Clock” (2010), a twenty-four-hour epic collage of hundreds and hundreds of film clips, in which each minute onscreen corresponds to a minute in real time. (Eleven hours and thirty-seven minutes into the piece, Peter Fonda tosses his wristwatch in “Easy Rider”; the...